com.vesoft.nebula.client.meta

Class MetaClient

java.lang.Object

com.vesoft.nebula.client.meta.AbstractMetaClient

com.vesoft.nebula.client.meta.MetaClient

public class MetaClient
extends AbstractMetaClient

Field Summary

Fields

Modifier and Type	Field and Description
static int	LATEST_SCHEMA_VERSION

Fields inherited from class com.vesoft.nebula.client.meta.AbstractMetaClient

connectionRetry, executionRetry, protocol, timeout, transport

Constructor Summary

Constructors

Constructor and Description
MetaClient(HostAddress address)
MetaClient(List<HostAddress> addresses)
MetaClient(List<HostAddress> addresses, int connectionRetry, int executionRetry)
MetaClient(List<HostAddress> addresses, int timeout, int connectionRetry, int executionRetry)
MetaClient(List<HostAddress> addresses, int timeout, int connectionRetry, int executionRetry, boolean enableSSL, SSLParam sslParam)
MetaClient(String host, int port)

Method Summary

Modifier and Type	Method and Description
void	close() close transport
void	connect()
Schema	getEdge(String spaceName, String edgeName) get schema of specific edgeRow
List<EdgeItem>	getEdges(String spaceName) get all edges of specific space
Map<Integer,List<HostAddr>>	getPartsAlloc(String spaceName) Get all parts and the address in a space Store in this.parts
SpaceItem	getSpace(String spaceName) get one space
List<IdName>	getSpaces() get all spaces
Schema	getTag(String spaceName, String tagName) get schema of specific tag
List<TagItem>	getTags(String spaceName) get all tags of spaceName
Set<HostAddr>	listHosts() get all Storaged servers

Methods inherited from class com.vesoft.nebula.client.meta.AbstractMetaClient

getConnectionRetry, getExecutionRetry, getTimeout

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LATEST_SCHEMA_VERSION

public static final int LATEST_SCHEMA_VERSION

See Also:

Constant Field Values

Constructor Detail

MetaClient

public MetaClient(String host,
                  int port)
           throws UnknownHostException

Throws:

UnknownHostException

MetaClient

public MetaClient(HostAddress address)
           throws UnknownHostException

Throws:

UnknownHostException

MetaClient

public MetaClient(List<HostAddress> addresses)
           throws UnknownHostException

Throws:

UnknownHostException

MetaClient

public MetaClient(List<HostAddress> addresses,
                  int connectionRetry,
                  int executionRetry)
           throws UnknownHostException

Throws:

UnknownHostException

MetaClient

public MetaClient(List<HostAddress> addresses,
                  int timeout,
                  int connectionRetry,
                  int executionRetry)
           throws UnknownHostException

Throws:

UnknownHostException

MetaClient

public MetaClient(List<HostAddress> addresses,
                  int timeout,
                  int connectionRetry,
                  int executionRetry,
                  boolean enableSSL,
                  SSLParam sslParam)
           throws UnknownHostException

Throws:

UnknownHostException

Method Detail

connect

public void connect()
             throws com.facebook.thrift.TException,
                    ClientServerIncompatibleException

Throws:

com.facebook.thrift.TException

ClientServerIncompatibleException

close

public void close()

close transport

getSpaces

public List<IdName> getSpaces()
                       throws com.facebook.thrift.TException,
                              ExecuteFailedException

get all spaces

Returns:

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getSpace

public SpaceItem getSpace(String spaceName)
                   throws com.facebook.thrift.TException,
                          ExecuteFailedException

get one space

Parameters:

spaceName - nebula graph space

Returns:

SpaceItem

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getTags

public List<TagItem> getTags(String spaceName)
                      throws com.facebook.thrift.TException,
                             ExecuteFailedException

get all tags of spaceName

Parameters:

spaceName - nebula graph space

Returns:

TagItem list

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getTag

public Schema getTag(String spaceName,
                     String tagName)
              throws com.facebook.thrift.TException,
                     ExecuteFailedException

get schema of specific tag

Parameters:

spaceName - nebula graph space

tagName - nebula tag name

Returns:

Schema

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getEdges

public List<EdgeItem> getEdges(String spaceName)
                        throws com.facebook.thrift.TException,
                               ExecuteFailedException

get all edges of specific space

Parameters:

spaceName - nebula graph space

Returns:

EdgeItem list

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getEdge

public Schema getEdge(String spaceName,
                      String edgeName)
               throws com.facebook.thrift.TException,
                      ExecuteFailedException

get schema of specific edgeRow

Parameters:

spaceName - nebula graph space

edgeName - nebula edgeRow name

Returns:

Schema

Throws:

com.facebook.thrift.TException

ExecuteFailedException

getPartsAlloc

public Map<Integer,List<HostAddr>> getPartsAlloc(String spaceName)
                                          throws ExecuteFailedException,
                                                 com.facebook.thrift.TException

Get all parts and the address in a space Store in this.parts

Parameters:

spaceName - Nebula space name

Returns:

Throws:

ExecuteFailedException

com.facebook.thrift.TException

listHosts

public Set<HostAddr> listHosts()

get all Storaged servers